Screed anchor



C. MACUMBER scREED ANCHOR March 31, 1925.

FledANov. 29, 1922 Patented Mar. 31, 1925.

UNITED STATES CLARENCE MACUMEER, or WINTERSET, IOWA.

sonnen ANCHOR.

Application filed November 29, 1922. Serial No. 604,010.

To all 101mm it may concern.'

Be it known thatl, CLARENCE MACUMBER, a citizen of the United States, and a resident of Vinterset, in the county of Madison, .State of Iowa, have invented a certain new and usefulScreed Anchor, of which the following is a specification.

My invention relates to that class of screed anchors which are intended to be forced `or driven into concrete before it has setv and `hardened, and then after it has set and hardened, the upwardly projecting ends may be bent over flat against the top surface of the concrete so tha-t the anchors will not interfere with the use of the concrete base during further building operations, and then when it is desired Ato lay a wooden floor on a concrete base, the portions of the anchors above the concrete may lbe bent upwardly and secured by nails or otherwise to opposite sides of the screeds, and 'finally the wooden fioors may be secured to the screeds.

With screed anchors of kthis type now inv general use, there is at times considerable dificulty 1n 'getting the-m to 'penetrate the mass of concrete, and at times itv is necessary to take a mallet or hammer and drive them into position, and in this connection it is one of my objects to provide a screed lanchor which will readily and-easily penetrate the mass of concrete and'which is so shaped and proportioned, and made of such material, that it may be driven with-a mallet or hammer straight into the mass of concrete. 'Y

Heretofore it has been customary to provide screed anchors having the portion thereof that penetrates the concrete mfade corrugated or with divergent parts for, the general purpose of forming a better anchorage in the concrete after it'has set. With,A

devices of this'kind, and in instances where it is necessary to use considerable'force or to hammer them into the concrete, they will, in many instances, instead of penetrating straight into the mass of concrete, strike a stone or other obstruction in the 'mass and bend laterally, and hence not become properly embedded in the concrete so that after they are in use and strains are applied to them, they will pull out of the concrete and thus result inv defective anchoring of the screeds; and in this connection it is my object to provide a screed anchor which,

when being driven into the mass of concrete, will penetrate straight dow-n into the mass and move aside or press downv any such obstructions, as a relatively large stone, without deflecting the downward path of travel of the screed anchor. Another object of my invention is to provide a screed anchor of this character with anchoring members formed in the lower ends of the upright members and inclined upwardly and away from the upright members, whereby there is presented in the lower or penetrating end of the anchor a vsmooth round and penetrating point that will tend to slide over stones or similar obstructions in the mass of concrete and push them aside, thus making it relatively easy to force the anchors into the mass of concrete, and also to form a more perfect and secureanchorage after the concrete has set and' hardened.

A further object is to provide an anchor of this character having anchoring means f at the horizontally. arranged connect-ing member of the anchor to thereby prevent.-

this connecting member from beingbrolcen away from the concrete when the upwardly proyecting ends of the anchors are purposely lor accidentally bent from their upright positions.y v

My'invention consists in the construction, arrangement and combination of the lvarious parts ofthe device, wherebythe-obafter more fully set forth, pointedy out in lmy claims, and illustrated in the accomthrough a portion of a concrete base and a" wooden screed thereon with one of my im'- proved anchoring devices applied thereto `as 1n use. f f

vjects contemplated are attained, as herein- `v Figure 3 shows a vertical, sectional view through a portion ofa concrete base and a side elevation of a portion of a wooden screed thereon with my improved anchor appliedy thereto as in use; and Figure 4 shows a side elevation of a modified form of my invention.

Referring tothe accompanying drawings it will be seen that-my impro-ved screed anchor `is formed` complete with a single length of round wire and this wire is pref- 1 erably made of relatively stili material adapted ior` driving, as will hereinafter be more fully explained. T he central portion of the wire forms the connecting member indicated by the numeral 10. At the cene tral portion of this connecting member theie is a downwardly extending anchoring loop 11. At the sides of the connecting member Yare the upright members 19. which extend upwardly to a distance somewhat less than the height o1 the screed to be placed thereon,

'and the space between the upright' members and [away from the part 14'to 'form the anchors 16 and also the rounded penetrating ends 17. The screeds shown in Figures 2 and 3 are indicated by the numeral 18.

In the modiiied form of my invention shown in Figure 4, I use the saine upright anchoring members 14 having the anchors 16 attheir lower end, and tlie haltturned end 13 at the top,.but the part indicated in Figure 4 by the numeral 19 extends parallel with the part 14 down to a point adjacent tothe lower end of the part 14.

, l/Vhen this form of the invention is used, these anchors are'arranged on a screed in staggered relation. That is to say, one is first placed on one side or" the screedand then theneXt one on the opposite sideiot the screed and so on throughout the length oi' the screed. s l

In practical operation and' after the concrete base has been'placed in position and leveled oft, andbefore it has set and hardcned, the anchors are placed therein in upright positions along lines designed to receive 'a screed between the upwardly projecting portions of the anchors. In some instances these anchors penetrate Hthe mass of concrete easily, but in many instances where the concrete is relatively stili or consists yprincipally of relatively large stones, it is necessary to press the anchors with considerable force into the concrete, and

ksometimes it is necessary to taire a mallet or hammer and drive the anchors' into place. flien this heavy pressing or driving operation is necessary, the peculiar shape of the to one vside the vlarge stones in the concrete and in addition to this, if these stones have `been 'pressed aside 'andA the anchor driven vtween the'other anchor to position below them, the concrete that was thus pressed' will tend to expand and the'v stones moved back to` position directly above the anchor-ing member 1G.' rthis is illustrated in Figure 8, and when this occurs then a very vstrong and firm anchorage is provided. y

In screed anchors in which the concrete penetrating member was made corrugated, then when'such anchors are forced linto the concrete, the large stones were pressed rto one side, and 'away `from. the path and out of contact with the anchor, andno stones could, of course, assume a position directly above the anchoring member such as the member 16. Hence' by my improvement, I have provided an anchoring device of this ycharacter which may be driveninto concrete with a mallet or "hammer, landwvhen so driven, the penetrating ends will Apass straight through .the mass of concrete and after it has passed through the concrete and stones will assume a position `directly Y above `the vanchoring member and thus add additional strength to the structure. VVherea's, in screed. anchors where the penetratingv ends are either corrugated or madey slightly divergent from a straight line, it' frequently happens that inr driving or pressing them into concrete they turnout laterally and only ,penetratev the concrete a Short*distance,land then when strains are applied to them, laterthey pull out. c f

` The anchoring member 11 on the connecting member 10 serves avaluable and important function in that when the anchor' placed in the concrete kas shown in Figure 2, this anchoring member will hold theconnecting member firmly in its position, and the necessity for this occurs when the concrete iioor has set yand hardened andworlrmenare rising the concrete licor during further building operations, then the upwardly projecting ends of the anchors are bent over iiat with the floor and this anchoring` meniber 11 prevents the connecting member 10 from being broken loose `from the concrete during such 'movements of the anchor.

I claim as my invention: y v

1. An'iinprovedl screed anchor comprising a member designed to be secured to both sides of'a'sc'reed and two anchoring members connected therewith,` and designed :to n extend into concrete, anda third anchoring member connected to the part of the anchor that receives the screed and designed to penetrate the concrete a short distance" bemembers, for the purposes stated.

2. An improvedscreed anchorl formed ot a single [piece o1c round and relatively ,stiii wire and comprisingl a connecting portion, an anchoring loop formed in thefconnecting portion and designed to penetrate the concrete, two upwardly extended meinbers at the opposite ends of tbe connecting member2 two straight downwardly extended members at the ends of said upwardly extending members and designed to project a considerable distance below the connecting member, therel being loops formed between the said upwardly and downwardly extending members to` receive nails,l and an anchoring member at the lower end of each of the downwardly extended members extended 10 Vupwardly and outwardly, for the purposes stated.

Des Moines, Iowa, November 27, 1922.

v CLARENCE MACUMBER. 

